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--- cisco:books:ccnp_300-730:ch3:001 [2025/08/31 14:59] – Name
+++ cisco:books:ccnp_300-730:ch3:001 [2025/08/31 17:54] (current) – Name
@@ Line 16: / Line 16: @@
 <code>en
 conf t
+no ip domain lookup
 hostname r1-hub
 line con 0
+history size 256
 logg syn
 exec-timeout 0 0
@@ Line 26: / Line 28: @@
  ip address 1.1.1.1 255.255.255.255
 !
-interface Ethernet0/0
+interface GigabitEthernet1
  shutdown
  ip address 12.1.1.1 255.255.255.0
@@ Line 63: / Line 65: @@
  match address castle-acl
 !
-interface Ethernet0/0
+interface GigabitEthernet1
  crypto map svpn-map
  no shutdown
@@ Line 73: / Line 75: @@
 <code>en
 conf t
+no ip domain lookup
 hostname r2-spoke
 line con 0
+history size 256
 logg syn
 exec-timeout 0 0
@@ Line 83: / Line 87: @@
  ip address 2.2.2.2 255.255.255.255
 !
-interface Ethernet0/0
+interface GigabitEthernet1
  shutdown
  ip address 12.1.1.2 255.255.255.0
@@ Line 120: / Line 124: @@
  match address castle-acl
 !
-interface Ethernet0/0
+interface GigabitEthernet1
  crypto map svpn-map
  no shutdown
@@ Line 135: / Line 139: @@
   * The ping should fail for this initial configuration. Now the steps will be detailed to isolate the root cause.
+<code>r1-hub#show crypto ikev2 sa
+r1-hub#</code>
+  * Nothing returned. The neighbor is missing. The next step is to check the CEF table on the hub.
+<code>r1-hub#show ip cef 12.1.1.2
+.1.1.2/32
+  attached to GigabitEthernet1</code>
+  * The hub's CEF table has the correct entry. This tells us that layers 1-3 are correct. If you want, you can view the ARP table to confirm.
+<code>r1-hub#show ip arp 12.1.1.2
+Protocol  Address          Age (min)  Hardware Addr   Type   Interface
+Internet  12.1.1.2                9   5000.0004.0000  ARPA   GigabitEthernet1</code>
+  * A packet capture on the hub's interface (or spoke) will reveal that their are no ESP packets being exchanged.
+  * The following packet capture is taken when trying to ping the spoke from the hub.
+{{ :cisco:books:ccnp_300-730:ch3:001:Lab-001-IKEv2-Capture.png?900 |Lab-001-IKEv2-Capture}}
+  * Notice the absent of the ESP packets from [[:cisco:books:ccnp_300-730:ch3:000|Lab 000]].
+  * Turn on debugging to examine the packet flows.
+<code>r1-hub#debug crypto ikev2
+IKEv2 default debugging is on</code>
+  * Now ping the spoke again.
+<code>r1-hub#ping 12.1.1.2
+Type escape sequence to abort.
+Sending 5, 100-byte ICMP Echos to 12.1.1.2, timeout is 2 seconds:
+*Aug 31 15:17:56.832: IKEv2:% Getting preshared key from profile keyring lion-key
+*Aug 31 15:17:56.833: IKEv2:% Matched peer block 'peer-remote'
+*Aug 31 15:17:56.833: IKEv2:Searching Policy with fvrf 0, local address 12.1.1.1
+*Aug 31 15:17:56.833: IKEv2:Found Policy 'svpn-policy'
+*Aug 31 15:17:56.833: IKEv2:(SESSION ID = 1,SA ID = 1):[IKEv2 -> Crypto Engine] Computing DH public key, DH Group 14
+*Aug 31 15:17:56.833: IKEv2:(SA ID = 1):[Crypto Engine -> IKEv2] DH key Computation PASSED
+*Aug 31 15:17:56.833: IKEv2:(SESSION ID = 1,SA ID = 1):Request queued for computation of DH key
+*Aug 31 15:17:56.833: IKEv2:IKEv2 initiator - no config data to send in IKE_SA_INIT exch
+*Aug 31 15:17:56.833: IKEv2:(SESSION ID = 1,SA ID = 1):Generating IKE_SA_INIT message
+*Aug 31 15:17:56.833: IKEv2:(SESSION ID = 1,SA ID = 1):IKE Proposal: 1, SPI size: 0 (initial negotiation),
+Num. transforms: 4
+   AES-CBC   SHA512   SHA512   DH_GROUP_2048_MODP/Group 14
+*Aug 31 15:17:56.833: IKEv2:(SESSION ID = 1,SA ID = 1):Sending Packet [To 12.1.1.2:500/From 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : 6DE15BF054EB9486 - Responder SPI : 0000000000000000 Message id: 0
+IKEv2 IKE_SA_INIT Exchange REQUEST
+Payload contents:
+ SA KE N VID VID VID VID NOTIFY(NAT_DETECTION_SOURCE_IP) NOTIFY(NAT_DETECTION_DESTINATION_IP)
+*Aug 31 15:17:56.833: IKEv2:(SESSION ID = 1,SA ID = 1):Insert SA
+*Aug 31 15:17:56.859: IKEv2:(SESSION ID = 1,SA ID = 1):Received Packet [From 12.1.1.2:500/To 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : 6DE15BF054EB9486 - Responder SPI : 281E8E3CD1936670 Message id: 0
+IKEv2 IKE_SA_INIT Exchange RESPONSE
+Payload contents:
+ SA KE N VID VID VID VID NOTIFY(NAT_DETECTION_SOURCE_IP) NOTIFY(NAT_DETECTION_DESTINATION_IP)
+*Aug 31 15:17:56.860: IKEv2:(SESSION ID = 1,SA ID = 1):Processing IKE_SA_INIT message
+*Aug 31 15:17:56.860: IKEv2:(SESSION ID = 1,SA ID = 1):Verify SA init message
+*Aug 31 15:17:56.860: IKEv2:(SESSION ID = 1,SA ID = 1):Processing IKE_SA_INIT message
+*Aug 31 15:17:56.860: IKEv2:(SESSION ID = 1,SA ID = 1):Checking NAT discovery
+*Aug 31 15:17:56.860: IKEv2:(SESSION ID = 1,SA ID = 1):NAT not found
+*Aug 31 15:17:56.860: IKEv2:(SESSION ID = 1,SA ID = 1):[IKEv2 -> Crypto Engine] Computing DH secret key, DH Group 14
+*Aug 31 15:17:56.884: IKEv2:(SA ID = 1):[Crypto Engine -> IKEv2] DH key Computation PASSED
+*Aug 31 15:17:56.884: IKEv2:(SESSION ID = 1,SA ID = 1):Request queued for computation of DH secret
+*Aug 31 15:17:56.884: IKEv2:(SA ID = 1):[IKEv2 -> Crypto Engine] Calculate SKEYSEED and create rekeyed IKEv2 SA
+*Aug 31 15:17:56.884: IKEv2:(SA ID = 1):[Crypto Engine -> IKEv2] SKEYSEED calculation and creation of rekeyed IKEv2 SA PASSED
+*Aug 31 15:17:56.884: IKEv2:(SESSION ID = 1,SA ID = 1):Completed SA init exchange
+*Aug 31 15:17:56.884: IKEv2:(SESSION ID = 1,SA ID = 1):Check for EAP exchange
+*Aug 31 15:17:56.884: IKEv2:(SESSION ID = 1,SA ID = 1):Generate my authentication data
+*Aug 31 15:17:56.884: IKEv2:(SESSION ID = 1,SA ID = 1):Use preshared key for id 12.1.1.1, key len 5
+*Aug 31 15:17:56.884: IKEv2:[IKEv2 -> Crypto Engine] Generate IKEv2 authentication data
+*Aug 31 15:17:56.884: IKEv2:[Crypto Engine -> IKEv2] IKEv2 authentication data generation PASSED
+*Aug 31 15:17:56.885: IKEv2:(SESSION ID = 1,SA ID = 1):Get my authentication method
+*Aug 31 15:17:56.885: IKEv2:(SESSION ID = 1,SA ID = 1):My authentication method is 'PSK'
+*Aug 31 15:17:56.885: IKEv2:(SESSION ID = 1,SA ID = 1):Check for EAP exchange
+*Aug 31 15:17:56.885: IKEv2:(SESSION ID = 1,SA ID = 1):Generating IKE_AUTH message
+*Aug 31 15:17:56.885: IKEv2:(SESSION ID = 1,SA ID = 1):Constructing IDi payload: '12.1.1.1' of type 'IPv4 address'
+*Aug 31 15:17:56.885: IKEv2:(SESSION ID = 1,SA ID = 1):ESP Proposal: 1, SPI size: 4 (IPSec negotiation),
+Num. transforms: 3
+   AES-CBC   SHA512   Don't use ESN
+*Aug 31 15:17:56.885: IKEv2:(SESSION ID = 1,SA ID = 1):Building packet for encryption.
+Payload contents:
+ VID IDi AUTH SA TSi TSr NOTIFY(INITIAL_CONTACT) NOTIFY(SET_WINDOW_SIZE) NOTIFY(ESP_TFC_NO_SUPPORT) NOTIFY(NON_FIRST_FRAGS)
+*Aug 31 15:17:56.885: IKEv2:(SESSION ID = 1,SA ID = 1):Sending Packet [To 12.1.1.2:500/From 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : 6DE15BF054EB9486 - Responder SPI : 281E8E3CD1936670 Message id: 1
+IKEv2 IKE_AUTH Exchange REQUEST
+Payload contents:
+ ENCR
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Received Packet [From 12.1.1.2:500/To 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : 6DE15BF054EB9486 - Responder SPI : 281E8E3CD1936670 Message id: 1
+IKEv2 IKE_AUTH Exchange RESPONSE
+Payload contents:
+ VID IDr AUTH NOTIFY(TS_UNACCEPTABLE)
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Process auth response notify
+*Aug 31 15:17:56.891: IKEv2-ERROR:(SESSION ID = 1,SA ID = 1):
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Searching policy based on peer's identity '12.1.1.2' of type 'IPv4 address'
+*Aug 31 15:17:56.891: IKEv2:Searching Policy with fvrf 0, local address 12.1.1.1
+*Aug 31 15:17:56.891: IKEv2:Found Policy 'svpn-policy'
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Verify peer's policy
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Peer's policy verified
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Get peer's authentication method
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Peer's authentication method is 'PSK'
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Get peer's preshared key for 12.1.1.2
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Verify peer's authentication data
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Use preshared key for id 12.1.1.2, key len 5
+*Aug 31 15:17:56.891: IKEv2:[IKEv2 -> Crypto Engine] Generate IKEv2 authentication data
+*Aug 31 15:17:56.891: IKEv2:[Crypto Engine -> IKEv2] IKEv2 authentication data generation PASSED
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Verification of peer's authenctication data PASSED
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Check for EAP exchange
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):IKEV2 SA created; inserting SA into database. SA lifetime timer (86400 sec) started
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Session with IKE ID PAIR (12.1.1.2, 12.1.1.1) is UP
+*Aug 31 15:17:56.891: IKEv2:IKEv2 MIB tunnel started, tunnel index 1
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Checking for duplicate IKEv2 SA
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):No duplicate IKEv2 SA found
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Queuing IKE SA delete request reason: unknown
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Sending DELETE INFO message for IPsec SA [SPI: 0x45BE1F9C]
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Building packet for encryption.
+Payload contents:
+ DELETE
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Checking if request will fit in peer window
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Sending Packet [To 12.1.1.2:500/From 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : 6DE15BF054EB9486 - Responder SPI : 281E8E3CD1936670 Message id: 2
+IKEv2 INFORMATIONAL Exchange REQUEST
+Payload contents:
+ ENCR
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Check for existing IPSEC SA
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Delete all IKE SAs
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Sending DELETE INFO message for IKEv2 SA [ISPI: 0x6DE15BF054EB9486 RSPI: 0x281E8E3CD1936670]
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Building packet for encryption.
+Payload contents:
+ DELETE
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Checking if request will fit in peer window
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Check for existing active SA
+*Aug 31 15:17:56.891: IKEv2:(SESSION ID = 1,SA ID = 1):Delete all IKE SAs
+*Aug 31 15:17:56.892: IKEv2:(SESSION ID = 1,SA ID = 1):Received Packet [From 12.1.1.2:500/To 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : 6DE15BF054EB9486 - Responder SPI : 281E8E3CD1936670 Message id: 2
+IKEv2 INFORMATIONAL Exchange RESPONSE
+Payload contents:
+*Aug 31 15:17:56.892: IKEv2:(SESSION ID = 1,SA ID = 1):Processing ACK to informational exchange
+*Aug 31 15:17:56.892: IKEv2:(SESSION ID = 1,SA ID = 1):Check for existing IPSEC SA
+*Aug 31 15:17:56.892: IKEv2:(SESSION ID = 1,SA ID = 1):Delete all IKE SAs
+*Aug 31 15:17:56.892: IKEv2:(SESSION ID = 1,SA ID = 1):Sending Packet [To 12.1.1.2:500/From 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : 6DE15BF054EB9486 - Responder SPI : 281E8E3CD1936670 Message id: 3
+IKEv2 INFORMATIONAL Exchange REQUEST
+Payload contents:
+ ENCR
+*Aug 31 15:17:56.893: IKEv2:(SESSION ID = 1,SA ID = 1):Received Packet [From 12.1.1.2:500/To 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : 6DE15BF054EB9486 - Responder SPI : 281E8E3CD1936670 Message id: 3
+IKEv2 INFORMATIONAL Exchange RESPONSE
+Payload contents:
+*Aug 31 15:17:56.893: IKEv2:(SESSION ID = 1,SA ID = 1):Processing ACK to informational exchange
+*Aug 31 15:17:56.893: IKEv2:(SESSION ID = 1,SA ID = 1):Deleting SA.....
+Success rate is 0 percent (0/5)
+r1-hub#
+*Aug 31 15:18:26.837: IKEv2:% Getting preshared key from profile keyring lion-key
+*Aug 31 15:18:26.838: IKEv2:% Matched peer block 'peer-remote'
+*Aug 31 15:18:26.838: IKEv2:Searching Policy with fvrf 0, local address 12.1.1.1
+*Aug 31 15:18:26.838: IKEv2:Found Policy 'svpn-policy'
+*Aug 31 15:18:26.838: IKEv2:(SESSION ID = 1,SA ID = 1):[IKEv2 -> Crypto Engine] Computing DH public key, DH Group 14
+*Aug 31 15:18:26.838: IKEv2:(SA ID = 1):[Crypto Engine -> IKEv2] DH key Computation PASSED
+*Aug 31 15:18:26.838: IKEv2:(SESSION ID = 1,SA ID = 1):Request queued for computation of DH key
+*Aug 31 15:18:26.838: IKEv2:IKEv2 initiator - no config data to send in IKE_SA_INIT exch
+*Aug 31 15:18:26.838: IKEv2:(SESSION ID = 1,SA ID = 1):Generating IKE_SA_INIT message
+*Aug 31 15:18:26.838: IKEv2:(SESSION ID = 1,SA ID = 1):IKE Proposal: 1, SPI size: 0 (initial negotiation),
+Num. transforms: 4
+   AES-CBC   SHA512   SHA512   DH_GROUP_2048_MODP/Group 14
+*Aug 31 15:18:26.838: IKEv2:(SESSION ID = 1,SA ID = 1):Sending Packet [To 12.1.1.2:500/From 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : C93696F08692939D - Responder SPI : 0000000000000000 Message id: 0
+IKEv2 IKE_SA_INIT Exchange REQUEST
+Payload contents:
+ SA KE N VID VID VID VID NOTIFY(NAT_DETECTION_SOURCE_IP) NOTIFY(NAT_DETECTION_DESTINATION_IP)
+*Aug 31 15:18:26.838: IKEv2:(SESSION ID = 1,SA ID = 1):Insert SA
+*Aug 31 15:18:26.865: IKEv2:(SESSION ID = 1,SA ID = 1):Received Packet [From 12.1.1.2:500/To 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : C93696F08692939D - Responder SPI : 417A337996780CD8 Message id: 0
+IKEv2 IKE_SA_INIT Exchange RESPONSE
+Payload contents:
+ SA KE N VID VID VID VID NOTIFY(NAT_DETECTION_SOURCE_IP) NOTIFY(NAT_DETECTION_DESTINATION_IP)
+*Aug 31 15:18:26.866: IKEv2:(SESSION ID = 1,SA ID = 1):Processing IKE_SA_INIT message
+*Aug 31 15:18:26.866: IKEv2:(SESSION ID = 1,SA ID = 1):Verify SA init message
+*Aug 31 15:18:26.866: IKEv2:(SESSION ID = 1,SA ID = 1):Processing IKE_SA_INIT message
+*Aug 31 15:18:26.866: IKEv2:(SESSION ID = 1,SA ID = 1):Checking NAT discovery
+*Aug 31 15:18:26.866: IKEv2:(SESSION ID = 1,SA ID = 1):NAT not found
+*Aug 31 15:18:26.866: IKEv2:(SESSION ID = 1,SA ID = 1):[IKEv2 -> Crypto Engine] Computing DH secret key, DH Group 14
+*Aug 31 15:18:26.891: IKEv2:(SA ID = 1):[Crypto Engine -> IKEv2] DH key Computation PASSED
+*Aug 31 15:18:26.891: IKEv2:(SESSION ID = 1,SA ID = 1):Request queued for computation of DH secret
+*Aug 31 15:18:26.891: IKEv2:(SA ID = 1):[IKEv2 -> Crypto Engine] Calculate SKEYSEED and create rekeyed IKEv2 SA
+*Aug 31 15:18:26.891: IKEv2:(SA ID = 1):[Crypto Engine -> IKEv2] SKEYSEED calculation and creation of rekeyed IKEv2 SA PASSED
+*Aug 31 15:18:26.891: IKEv2:(SESSION ID = 1,SA ID = 1):Completed SA init exchange
+*Aug 31 15:18:26.891: IKEv2:(SESSION ID = 1,SA ID = 1):Check for EAP exchange
+*Aug 31 15:18:26.891: IKEv2:(SESSION ID = 1,SA ID = 1):Generate my authentication data
+*Aug 31 15:18:26.891: IKEv2:(SESSION ID = 1,SA ID = 1):Use preshared key for id 12.1.1.1, key len 5
+*Aug 31 15:18:26.891: IKEv2:[IKEv2 -> Crypto Engine] Generate IKEv2 authentication data
+*Aug 31 15:18:26.891: IKEv2:[Crypto Engine -> IKEv2] IKEv2 authentication data generation PASSED
+*Aug 31 15:18:26.891: IKEv2:(SESSION ID = 1,SA ID = 1):Get my authentication method
+*Aug 31 15:18:26.891: IKEv2:(SESSION ID = 1,SA ID = 1):My authentication method is 'PSK'
+*Aug 31 15:18:26.891: IKEv2:(SESSION ID = 1,SA ID = 1):Check for EAP exchange
+*Aug 31 15:18:26.891: IKEv2:(SESSION ID = 1,SA ID = 1):Generating IKE_AUTH message
+*Aug 31 15:18:26.891: IKEv2:(SESSION ID = 1,SA ID = 1):Constructing IDi payload: '12.1.1.1' of type 'IPv4 address'
+*Aug 31 15:18:26.891: IKEv2:(SESSION ID = 1,SA ID = 1):ESP Proposal: 1, SPI size: 4 (IPSec negotiation),
+Num. transforms: 3
+   AES-CBC   SHA512   Don't use ESN
+*Aug 31 15:18:26.891: IKEv2:(SESSION ID = 1,SA ID = 1):Building packet for encryption.
+Payload contents:
+ VID IDi AUTH SA TSi TSr NOTIFY(INITIAL_CONTACT) NOTIFY(SET_WINDOW_SIZE) NOTIFY(ESP_TFC_NO_SUPPORT) NOTIFY(NON_FIRST_FRAGS)
+*Aug 31 15:18:26.892: IKEv2:(SESSION ID = 1,SA ID = 1):Sending Packet [To 12.1.1.2:500/From 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : C93696F08692939D - Responder SPI : 417A337996780CD8 Message id: 1
+IKEv2 IKE_AUTH Exchange REQUEST
+Payload contents:
+ ENCR
+*Aug 31 15:18:26.898: IKEv2:(SESSION ID = 1,SA ID = 1):Received Packet [From 12.1.1.2:500/To 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : C93696F08692939D - Responder SPI : 417A337996780CD8 Message id: 1
+IKEv2 IKE_AUTH Exchange RESPONSE
+Payload contents:
+ VID IDr AUTH NOTIFY(TS_UNACCEPTABLE)
+*Aug 31 15:18:26.898: IKEv2:(SESSION ID = 1,SA ID = 1):Process auth response notify
+*Aug 31 15:18:26.898: IKEv2-ERROR:(SESSION ID = 1,SA ID = 1):
+*Aug 31 15:18:26.898: IKEv2:(SESSION ID = 1,SA ID = 1):Searching policy based on peer's identity '12.1.1.2' of type 'IPv4 address'
+*Aug 31 15:18:26.899: IKEv2:Searching Policy with fvrf 0, local address 12.1.1.1
+*Aug 31 15:18:26.899: IKEv2:Found Policy 'svpn-policy'
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Verify peer's policy
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Peer's policy verified
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Get peer's authentication method
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Peer's authentication method is 'PSK'
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Get peer's preshared key for 12.1.1.2
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Verify peer's authentication data
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Use preshared key for id 12.1.1.2, key len 5
+*Aug 31 15:18:26.899: IKEv2:[IKEv2 -> Crypto Engine] Generate IKEv2 authentication data
+*Aug 31 15:18:26.899: IKEv2:[Crypto Engine -> IKEv2] IKEv2 authentication data generation PASSED
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Verification of peer's authenctication data PASSED
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Check for EAP exchange
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):IKEV2 SA created; inserting SA into database. SA lifetime timer (86400 sec) started
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Session with IKE ID PAIR (12.1.1.2, 12.1.1.1) is UP
+*Aug 31 15:18:26.899: IKEv2:IKEv2 MIB tunnel started, tunnel index 1
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Checking for duplicate IKEv2 SA
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):No duplicate IKEv2 SA found
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Queuing IKE SA delete request reason: unknown
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Sending DELETE INFO message for IPsec SA [SPI: 0x99324D76]
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Building packet for encryption.
+Payload contents:
+ DELETE
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Checking if request will fit in peer window
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Sending Packet [To 12.1.1.2:500/From 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : C93696F08692939D - Responder SPI : 417A337996780CD8 Message id: 2
+IKEv2 INFORMATIONAL Exchange REQUEST
+Payload contents:
+ ENCR
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Check for existing IPSEC SA
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Delete all IKE SAs
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Sending DELETE INFO message for IKEv2 SA [ISPI: 0xC93696F08692939D RSPI: 0x417A337996780CD8]
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Building packet for encryption.
+Payload contents:
+ DELETE
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Checking if request will fit in peer window
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Check for existing active SA
+*Aug 31 15:18:26.899: IKEv2:(SESSION ID = 1,SA ID = 1):Delete all IKE SAs
+*Aug 31 15:18:26.901: IKEv2:(SESSION ID = 1,SA ID = 1):Received Packet [From 12.1.1.2:500/To 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : C93696F08692939D - Responder SPI : 417A337996780CD8 Message id: 2
+IKEv2 INFORMATIONAL Exchange RESPONSE
+Payload contents:
+*Aug 31 15:18:26.901: IKEv2:(SESSION ID = 1,SA ID = 1):Processing ACK to informational exchange
+*Aug 31 15:18:26.901: IKEv2:(SESSION ID = 1,SA ID = 1):Check for existing IPSEC SA
+*Aug 31 15:18:26.901: IKEv2:(SESSION ID = 1,SA ID = 1):Delete all IKE SAs
+*Aug 31 15:18:26.901: IKEv2:(SESSION ID = 1,SA ID = 1):Sending Packet [To 12.1.1.2:500/From 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : C93696F08692939D - Responder SPI : 417A337996780CD8 Message id: 3
+IKEv2 INFORMATIONAL Exchange REQUEST
+Payload contents:
+ ENCR
+r1-hub#
+*Aug 31 15:18:26.902: IKEv2:(SESSION ID = 1,SA ID = 1):Received Packet [From 12.1.1.2:500/To 12.1.1.1:500/VRF i0:f0]
+Initiator SPI : C93696F08692939D - Responder SPI : 417A337996780CD8 Message id: 3
+IKEv2 INFORMATIONAL Exchange RESPONSE
+Payload contents:
+*Aug 31 15:18:26.902: IKEv2:(SESSION ID = 1,SA ID = 1):Processing ACK to informational exchange
+*Aug 31 15:18:26.902: IKEv2:(SESSION ID = 1,SA ID = 1):Deleting SA</code>
+  * Scroll the top where the IKEv2 is retrieving its configuration.
+<code>*Aug 31 15:17:56.832: IKEv2:% Getting preshared key from profile keyring lion-key
+*Aug 31 15:17:56.833: IKEv2:% Matched peer block 'peer-remote'
+{Output omitted.}</code>
+  * Notice how the output keeps deleting the SA, then rebuilding the SA to send again. Turn on debugging on the spoke and try to ping the hub.
+<code>r2-spoke#debug crypto ikev2
+IKEv2 default debugging is on
+r2-spoke#ping 12.1.1.1</code>
+  * The spoke is not generating the same style output as the hub. Lets verify the crypto configuration on the interface first.
+<code>r2-spoke#show run int g1
+Building configuration...
+Current configuration : 138 bytes
+!
+interface GigabitEthernet1
+ ip address 12.1.1.2 255.255.255.0
+ negotiation auto
+ no mop enabled
+ no mop sysid
+ crypto map svpn-map
+end</code>
+  * The interface configuration looks correct. Next is to verify the crypto configuration and double-check the mapping.
+<code>r2-spoke#show run | s crypto
+! Ignore the PKI cert info at the top.
+crypto ikev2 proposal rook-proposal
+ encryption aes-cbc-256
+ integrity sha512
+ group 14
+crypto ikev2 policy svpn-policy
+ proposal rook-proposal
+crypto ikev2 keyring lion-key
+ peer peer-remote
+  address 12.1.1.1
+  pre-shared-key cisco
+ !
+crypto ikev2 profile side-profile
+ match identity remote address 12.1.1.1 255.255.255.255
+ authentication remote pre-share
+ authentication local pre-share
+ keyring local lion-key
+crypto ipsec transform-set tset esp-aes esp-sha512-hmac
+ mode tunnel
+crypto map svpn-map 10 ipsec-isakmp
+ set peer 12.1.1.1
+ set transform-set tset
+ set pfs group14
+ set ikev2-profile side-profile
+ match address castle-acl</code>
+  * The **crypto map svpn-map** does match. Reading through Chapter 3, as referenced above, concludes that the crypto configuration is correct. Lets look at the access-list the crypto map is referencing.
+<code>r2-spoke#show run | s access-list extended castle-acl
+ip access-list extended castle-acl
+ permit ip host 12.1.1.1 host 12.1.1.2<code>
+  * At first glance, it seems the ACL is correct, but the permit line is subtly backwards. Flip the hosts around and test again.
+  * The next step is for demonstration purposes to show what happens when the access-list in-use is attempted to be edited.
+<code>2-spoke#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+r2-spoke(config)#ip access-list extended castle-acl
+r2-spoke(config-ext-nacl)#no  10 permit ip host 12.1.1.1 host 12.1.1.2
+%ACL castle-acl can not be modified/deleted, as it is used in crypto-map svpn-map
+%Please first remove the ACL from crypto map or remove the crypto map from the interface</code>
+  * This is the correct procedure to migrate the ACL entry to the end.
+<code>r2-spoke#conf t
+Enter configuration commands, one per line.  End with CNTL/Z.
+r2-spoke(config)#int g1
+r2-spoke(config-if)#no crypto map
+r2-spoke(config-if)#
+*Aug 31 17:23:37.223: (ipsec_license_release) IPSEC License handle release failed (55)
+r2-spoke(config-if)#
+*Aug 31 17:23:37.323: %CRYPTO-6-ISAKMP_ON_OFF: ISAKMP is OFF
+r2-spoke(config-if)#ip access-list extended castle-acl
+r2-spoke(config-ext-nacl)#no  10 permit ip host 12.1.1.1 host 12.1.1.2
+r2-spoke(config-ext-nacl)#10 permit ip host 12.1.1.2 host 12.1.1.1</code>
+  * Verify the ACL is correct.
+<code>r2-spoke(config-if)#do show run | s access-list extended castle-acl
+ip access-list extended castle-acl
+permit ip host 12.1.1.2 host 12.1.1.1</code>
+  * The ACL is now correct. Next, add the crypto map back on the interface.
+<code>r2-spoke(config-ext-nacl)#int g1
+r2-spoke(config-if)# crypto map svpn-map</code>
+  * Turn debugging off on the hub and spoke.
+<code>r1-hub#u all
+All possible debugging has been turned off</code>
+<code>r2-spoke#u all
+All possible debugging has been turned off</code>
+  * Test with a ping again from either the hub or spoke.
+<code>r1-hub#ping 12.1.1.2
+Type escape sequence to abort.
+Sending 5, 100-byte ICMP Echos to 12.1.1.2, timeout is 2 seconds:
+!!!!!
+Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms</code>
+<code>r2-spoke#ping 12.1.1.1
+Type escape sequence to abort.
+Sending 5, 100-byte ICMP Echos to 12.1.1.1, timeout is 2 seconds:
+!!!!!
+Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/2 ms</code>
+  * Success. Verify the crypto sa.
+<code>r1-hub#show crypto ikev2 sa
+ IPv4 Crypto IKEv2  SA
+Tunnel-id Local                 Remote                fvrf/ivrf            Status
+         12.1.1.1/500          12.1.1.2/500          none/none            READY
+      Encr: AES-CBC, keysize: 256, PRF: SHA512, Hash: SHA512, DH Grp:14, Auth sign: PSK, Auth verify: PSK
+      Life/Active Time: 86400/276 sec</code>
+<code>r2-spoke#show crypto ikev2 sa
+ IPv4 Crypto IKEv2  SA
-  * Packet Capture on r1-hub e0/0 interface.
+Tunnel-id Local                 Remote                fvrf/ivrf            Status
-{{ :cisco:books:ccnp_300-730:ch3:000:Lab-000-IKEv2-Overview.png?900 |Lab-001-Overview}}\\
+         12.1.1.2/500          12.1.1.1/500          none/none            READY
+      Encr: AES-CBC, keysize: 256, PRF: SHA512, Hash: SHA512, DH Grp:14, Auth sign: PSK, Auth verify: PSK
+      Life/Active Time: 86400/313 sec</code>
+  * One last check with Wireshark while pinging.
+{{ :cisco:books:ccnp_300-730:ch3:001:Lab-001-IKEv2-Capture2.png?900 |Lab-001-IKEv2-Capture2}}\\

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